The Grade 80 U.S. Type Forged Master Link (MLK Type) is a heavy-duty, single-piece lifting ring designed to serve as the secure upper terminal for overhead lifting sets. It seamlessly connects the sling legs to the crane hook or other upper hoisting equipment.
Forged from a single piece of Alloy Steel. This aligns the metal grain structure, offering superior impact strength and fatigue resistance compared to welded rings. Resulting in a smooth, clean finish.
Features the classic "MLK" oblong profile compliant with ASTM A952 dimensions, ensuring perfect compatibility with standard US crane hooks and shackles.
Proof Load tested to 2.5 times the Working Load Limit (WLL). Manufactured from Quenched and Tempered Grade 80 Alloy Steel with full traceability markings.
| Sling Configuration | Suitability | Expert Note |
|---|---|---|
| 1-Leg Sling (Chain / Wire Rope) |
✔ EXCELLENT | Primary application. Ensure Link WLL > Sling WLL. |
| 2-Leg Sling (Chain / Wire Rope) |
✔ EXCELLENT | Ideal. Allows 2 legs to sit comfortably in the link radius. |
| 3 or 4-Leg Sling | ✘ DO NOT USE | Crowding Risk. You must use a Master Link Assembly (MLA) instead. |
| Item No. | Chain Size (inch) | WLL (Tonnes) | Dimensions (mm) | Weight (kg) | Product Code | |||
|---|---|---|---|---|---|---|---|---|
| 1 Leg | 2 Legs (0-45°) | A (Length) | B (Width) | D (Dia) | ||||
| 8-MLK-13 | 1/4 | 1.5 | 2.12 | 127 | 63.5 | 13 | 0.36 | 502046013 |
| 5/16 | 2 | 2.8 | ||||||
| 8-MLK-16 | 5/16 | 2 | 2.8 | 152 | 76 | 16 | 0.7 | 502046016 |
| 3/8 | 3.15 | - | ||||||
| 8-MLK-19 | 3/8 | 3.15 | 4.25 | 140 | 70 | 19 | 0.93 | 502046019 |
| 8-MLK-22 | 3/8 | 3.15 | 4.25 | 160 | 90 | 22 | 1.5 | 502046022 |
| 1/2 | 5.3 | - | ||||||
| 8-MLK-25 | 1/2 | 5.3 | 7.5 | 178 | 89 | 25 | 2.1 | 502046025 |
| 5/8 | 8 | 11.2 | ||||||
| 8-MLK-32 | 5/8 | 8 | 11.2 | 222 | 111 | 32 | 4.24 | 502046032 |
| 3/4 | 11.2 | 16 | ||||||
| 8-MLK-38 | 3/4 | 11.2 | 16 | 267 | 135 | 38 | 7.17 | 502046038 |
| 7/8 | 15 | 21.2 | ||||||
| 8-MLK-44 | 7/8 | 15 | 21.2 | 305 | 152 | 45 | 11.55 | 502046044 |
| 1 | 21.2 | - | ||||||
| 8-MLK-51 | 1 | 21.2 | 30 | 355 | 178 | 51 | 17.2 | 502046051 |
| 1-1/4 | 31.5 | - | ||||||
| 8-MLK-57 | 1-1/4 | 31.5 | 45 | 406 | 203 | 57 | 24.5 | 502046057 |
| 8-MLK-63 | - | - | - | 406 | 203 | 63.5 | 30.9 | 502046063 |
| 8-MLK-70 | - | - | - | 406 | 241 | 70 | 39.5 | 502046070 |
| 8-MLK-76 | - | - | - | 457 | 228 | 76 | 50.34 | 502046076 |
| 8-MLK-82 | - | - | - | 508 | 254 | 82.5 | 65.68 | 502046082 |
| 8-MLK-89 | - | - | - | 610 | 305 | 89 | 90.24 | 502046089 |
| 8-MLK-95 | - | - | - | 508 | 254 | 95 | 89.27 | 502046095 |
| 8-MLK-101 | - | - | - | 508 | 254 | 102 | 103.43 | 502046101 |
| 8-MLK-108 | - | - | - | 610 | 305 | 108 | 137 | 502046108 |
| 8-MLK-115 | - | - | - | 710 | 355 | 115 | 178 | 502046115 |
| 8-MLK-120 | - | - | - | 710 | 355 | 120 | 196 | 502046120 |
| 8-MLK-127 | - | - | - | 760 | 380 | 127 | 234 | 502046127 |
Grade 80 Sling Components are the long-established industry standard for chain slings and heavy lifting. Fully compliant with international lifting regulations and designed for durability.
Used to connect the sling to a crane or hoist hook.
End fittings for secure load attachment.
Essential hardware to join chains or fittings.
The core lifting medium and adjustment tools.
| Feature | Grade 80 | Grade 100 |
|---|---|---|
| Strength Level | Standard Industry Standard | +25% Higher |
| Component Size | Larger | Smaller (for same WLL) |
| Weight | Heavier | Lighter |
| Cost | More Cost-Effective | Higher |
